Question

active transport can be described as...

a form of cell transport that does not require spending energy.

the movement of molecules from a low concentration to a high concentration.

a form of osmosis.

the movement of molecules from a high concentration to a low concentration.

Explanation:

Active transport is a cellular process. It moves molecules against the concentration gradient (from low to high concentration). This requires energy (usually in the form of ATP). Osmosis is a type of passive transport (movement of water from high to low concentration of water, or low to high solute concentration). Passive transport (like simple diffusion) moves molecules from high to low concentration without energy.

Answer:

the movement of molecules from a low concentration to a high concentration.